Home / 138,039.23-207,063.48-38,191.07

Finding the Fourth Proportional to 138,039.23, 207,063.48 and 38,191.07

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Solution

The fourth proportional to 138,039.23, 207,063.48 and 38,191.07 is: 57,287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,039.23 : 207,063.48 = 38,191.07 : x
  2. Step 2: Convert to fraction form
    138,039.23/207,063.48 = 38,191.07/x
  3. Step 3: Cross multiply
    138,039.23x = 207,063.48 × 38,191.07
  4. Step 4: Simplify right side
    138,039.23x = 7,907,975,859.12
  5. Step 5: Solve for x
    x = 7,907,975,859.12/138,039.23
  6. Step 6: Final answer
    x = 57,287.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.